Box-tool.



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BOX TOOL No. 729 372. P'ATBNTED MAY 26; 1903.

W E.'MARGILLE.

BOX TO0L..

APPLICATION FILED FEB. 27, 1902.

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UNITED STATES Patented May 26, 1903.

PATENT OFF CE.

EDWARD MAROILLE, OF DECATUR, ILLINOIS.

BOX-TOOL.

SPECIFICATION formingpart of Letters Patent No. 729,372, dated May 26,1903. Application filed February 27, 1902. Serial No. 95.991. (Nomodel.)

To all whmn it may concern:

Be it known that I, EDWARD MARoILLE, of

the city of Decatrincounty of Macon, andState of Illinois, have inventedcertain'new and useful Improvements in Box-Tools, of which the followingis a specification. w The object of this invention is'to provide meansfor accurately and rapidly turning articles having either parallelsides, tapered sides, or partly straightand partly tapered sides.

The invention is exemplified in the structure hereinafter described, andit is defined in the appended claims.

In the drawings forming part of this speci- @cation, Figure 1 is a sideelevation of the tool.

Fig. 2 is an end elevation of the tool. Fig. 3 is a plan of the bodymember of the tool. Fig. 4: is a side elevation of one of the adjustablework-guides. Fig. 5 is an end elevation of the work-guide. Fig. 6 is adetail of one of the bolts used to adjust the work-guides. Fi 7 is anelevation of the inner surface of the tool-post. Fig. 8 is a sectionthrough the toolpost on line X in Fig. '7. v

The body member of the tool comprises a plate 1; an extension 2, risingfrom one end of the plate, and a stem 3, by which the tool is held in alathe-chuck or other support. The tool-post 12 sits on plate-l at oneside of the axis of the tool, and it is held in place by bolts 16 and17, as shown in Fig. 7. .Bolt 16 extends through hole 22, (shown in Fig3,) and bolt 17 extends through the slot 2 3,which is in the form of anare drawn with hole 22 for a center. The outer edge of the slot is inline with the outer edge of the hole, the inner side of the slot isextended inward past the inner side of the hole, and the bolt-holes inthe toolpost are in a line parallel with the face of the post, so whenbolt 17 rests against the outer edge of slot 23 the tool-post isparallel with the axis of the shaft- 3 and with the motion. of the workinto the box-tool. lVhen bolt 17 is loosened, moved inward in the slot,and retightened, the tool-post forms an angle with the motion of thework or with the axis of the box-tool that is proportionate to theoutside in a plane parallel with plate 1, as

shown in Figs. 7 and 8, and tools, as 13 and 14, may be inserted throughthe slot and held in place by clamp-screws 15. Bolts 8 extend throughsleeves 6, and they have shoulders 8 on their inner ends, against .whichthe sleeves are clamped by nuts 9. Guide-bars 19 are pivotally connectedwith bolts 8, and renewable bearing-strips 20 are held in grooves inbars 19.

The face of the tool-post is circularly recessed, as shown at 21 in Fig.7, and the side of tool 13 extends into the recess and is sharpened toface off the work when such facing is desired.

A guide member 5 rises from plate 1 on the side thereof oppositetool-post 12, and it curves over the center of plate 1 at its upper end.A groove 4 is formed in a rib on plate 1 and the guide member has a rib5 on its lower inner edge, that extends into the groove 4. Bolts 18extend through slots in plate 1 and screw into the guide member, andthese bolts aid the rib 5 to resist the stress of the work against thework-guides. A post 10 is secured to plate 1 in the rear of the verticalpart of the guide member 5, and a screw 11 extends through the post andinto the guide member and provides means for adjusting the guideslengthwise of the body.

A pair of externally-threaded sleeves 6 is screwedvertically through thehorizontal extension of the guide member, and another pair of sleeves isscrewed through the vertical extension of member 5. Fin ger-wheels 7 onsleeves 6 provide means for screwing the sleeves in and out. Bolts 8extend through sleeves 6, and they have shoulders 8 on their inner ends,against which the sleeves are clamped by nuts 9. Guide-bars 19 arepivotally connected with bolts 8 and renewable bearing-strips 20 areheld in grooves in bars 19.

The face of the tool-post is circularly recessed, as shown at 21 in Fig.7, and the side of tool 13 extends into the recess and is sharpened toface off the work when such facing is desired.

The box-tool may be held against rotation and moved to and from the workwhile the work is rotated, or it may be made to rotate While the work isfed into it.

The tools 13 and 14 and the guide-bars 20 are adjusted to conform to asample-finished article that it is desired to reproduce in quantities,and when the adjustment is correctly made one article after another isshaped with rapidity and precision.

Then the article to be turned has straight or parallel sides, the toolsand guides are set somewhat as shown in the drawings, the question ofdiameters alone being considered; but when the article is tapered thetools and guides are set 011 inclines corresponding to the taper of thework. When the work is partly tapered and partly straight, the tool 13is set at the proper angle to produce the required taper and the othertool is set straight.

In adjusting the tools and guides a finished sample is put in place inthe box-tool, the tool-post and the tools therein are adjusted toconform to the outline of the sample, the nuts 9 are loosened, theguides are lined up against the work, the sleeves are screwed inwarduntil their inner ends bear against the shoulders S of the bolts, andthe nuts 9 are retightened to clamp the sleeves against rotary motion.After the tools 13 and 14 are properly adjusted the screws 15 aretightened to make the adjustment secure.

The stress of the work is downward on the tool-post, but it is upward onthe guides and special provision is needed to overcome the stressonbolts 18. The rib 5 acting in groove 4: resists the upward stress onthe guide member to the full extent of the strength ofthe metal in therib, and it also provides for lengthwise adjustment of the guide memberon the bodyplate.

The front ends of the guides must be slightly in the rear of the frontedge of the tool 13, so that the tool will cut a bearing for the guides.The advance of the tool should not be more than is actuallyneeded tomake the necessary bearing-surface, and so it is very desirable to havethe guide member adjustable.

The sleeves 6 and the bolts therein move in and out in parallel lines,and to permit the guide-bars to assume inclined positions one bolt 8 ofeach pair is slotted at its pivot to permit the movement of thepivot-pin that the obliquity of the guide-bar requires. (See 8" in Fig.6.)

I claim 1. In a box-tool, the combination of abodyplate, a guide membersecured to a side of the plate and extended around the axis of the work,an elongated tool-holder on the opposite side of the plate, pivoted atone end to the plate, and a clamp-bolt for securing the swinging end ofthe tool-holder to the plate in various positions, whereby the tool inthe holder maybe set parallel with the axis of the work or atvariousangleswith relation thereto.

2. 'In a box-tool, the combination of a bodyplate, an elongatedtool-holder hinged at one end to one side of the body-plate a clampboltto secure the swinging end of the toolholder to the plate in variouspositions, a guide member longitudinally slidable on the opposite sideof the plate, and guide-bars adjustable in the guide member to and fromthe work.

3. In a box-tool, the combination of a body comprising a plate, alateralextension of the plate and a stem on the extension, a tool-postangnlarly adjustable on one side of the plate, a grooved rib rising onthe opposite side of the p1ate,a guide member having a rib engaging thegroove of the plate, such guide being extended partly around the axis ofthe work, and guide-bars adjustable in the guide member to and from thework.

4. In a box-tool, the combination of a bodyplate, a tool-post angnlarlyadjustable on one side of the plate, a guide member attached to theopposite side of the plate and extended partly around the axis of thework,externallythreaded sleeves screwed into the guide member andarranged in pairs disposed lengthwise of the tool, bolts in the sleeveshaving shoulders bearing against the inner ends of the sleeves, nuts onthe outer ends of the bolts to clamp the sleeves between the nuts andthe shoulders of the bolts, and guide-bars pivotally connected with theinner ends of the bolts.

In testimony whereof I sign my name in the presence of two subscribingwitnesses. EDWARD MAROILLE.

Witnesses:

S. R. GHER, L. P. GRAHAM.

